Include a coin cell battery and there have backup battery that lasts for approximately 3 months.do not need to charge often.
Tracks your steps, distance moved, calories burned, sleep patterns, measure the ultraviolet light, Call Alert, SMS Alert, Alarm Alert, Device anti-lost,SOS, Find phone,Remote Control Phone Camera.
Suitable for Android and iOS Smart Phone with Bluetooth 4.0.Centrally view all activity and share all your data across devices, as well as sync to Apple Health or Google Fit.
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